Jean I
Jean I may refer to:
- Jean I of Arles, Archbishop of Arles
- John I, Count of Ponthieu, son of Guy II of Ponthieu
- Jean I de Montfort, Comte de Montfort
- John I, Duke of Brittany, John the Red, Duke of Brittany
- John I, Count of Hainaut, Count of Hainaut
- John I, Count of Auxerre, son of John, Count of Chalon, ruled jointly as Count of Auxerre
- John I, Duke of Brabant, Duke of Brabant, Lothier and Limburg
- Jean I de Grailly, seneschal of Duchy of Gascony and Kingdom of Jerusalem
- Jean I Le Maingre
- John I of France, King of France and Navarre, and Count of Champagne for his five days alive
- John I, Count of Armagnac, Count of Armagnac
- Jean I de Croÿ, founder of the House of Croÿ
- John I, Duke of Bourbon, Duke of Bourbonand Duke of Auvergne
- Jean I, Lord of Monaco
- Jean I of Albret
- Jean Bérain the Elder, French draughtsman, designer, painter and engraver
- Jean I Restout, French painter, part of Restout family of painters
- Jean, Grand Duke of Luxembourg, ruled Luxembourg from 1964 to 2000